Give two examples each of sample, population and variable.

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A population will not exist in Hardy-Weinberg equilibrium if:

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Chief function of crista and macula is:

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This graph is a typical cell cycle representing DNA content of various phases (1 to 4). Identify the phases based on changes in the DNA content and select the correct option.

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A monohybrid cross between two plants, one having 22 cm long internodes and the other having 12 cm long internodes, produced F1 hybrids all of 18 cm long internodes. This is a case of

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Match the following columns and choose the correct option. Column−IColumn−III. Mutational BreedingP. Laborious and expensive process to obtain gene variation.II. SelectionQ. Hybrid vigour can be maintained for several generation.III. HybridizationR. Simplest and easiest method of plant improvement.IV. IntroductionS. Oldest breeding method T Quick method to obtain gene variation

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Consider the following statements: (a) The portion of the spectrum between 500 nm and 800 nm is also referred to as photosynthetically active radiation (PAR). (b) Magnesium, calcium and chloride ions play prominent roles in the photolysis of water. (c) In cyclic photophosphorylation, oxygen is not released (as there is no photolysis of water) and NADPH is also not produced. Of these statements given above,

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Which one of the following is not a poisonous snake? (a) Cobra (b) Viper (c) Python (d) Krait

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The smallest animal egg is that of

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what is the figure given below showing in particular?

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a decimolar solution of potassium ferrocyanide is 5% dissociated at 300 Kelvin calculate Osmotic pressure of solution

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Which one of the following statements is incorrect regarding IUDs?

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Removal of the ring of tissue outside the vascular cambium from the tree trunk kills it because.

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Match the following columns. Column I Column IIA. Cuticle1. Guard cellsB. Bulliform cells2. Single layerC. Stomata3. Waxy layerD. Epidermis4. Empty colourless cell Codes A B C D (a) 3 4 1 2 (b) 1 2 3 4 (c) 3 2 4 1 (d) 3 2 1 4

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A student looking through a light microscope saw this cell in cytokinesis. This cell is most likely from

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